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A049377 Row sums of triangle A049352. 4
1, 5, 33, 273, 2721, 31701, 421905, 6302913, 104270913, 1889862021, 37204038081, 789866524305, 17977594555233, 436435929785493, 11251798888929201, 306889765901872641, 8825681949708120705, 266828094135981378693 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..18.

W. Lang, On generalizations of Stirling number triangles, J. Integer Seqs., Vol. 3 (2000), #00.2.4.

FORMULA

E.g.f. exp(p(x))-1 with p(x) := x*(3-3*x+x^2)/(3*(1-x)^3) (E.g.f. first column of A049352).

CROSSREFS

Sequence in context: A087633 A135075 A215671 * A129890 A120733 A218496

Adjacent sequences:  A049374 A049375 A049376 * A049378 A049379 A049380

KEYWORD

nonn

AUTHOR

Wolfdieter Lang

STATUS

approved

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Last modified June 19 14:22 EDT 2013. Contains 226414 sequences.